Like Chad pointed out, you are on the right track. Never have done this for the 308 but have 7mm-08. Redchevy loads reduced loads for his wife to shoot in his 270 with H4895.

H4895 can be used with the 60% loads which in this application will most likely be slower than what you are looking for but is a starting point to work up from. Just keep it below the max listed loads for that powder and bullet when nearing that point.

Daddy K, be extremely careful my friend. Reduced loads can be extremely dangerous if loaded wrong and have destroyed numerous firearms. If you have any doubts about the load recipe, please check on here or with someone who knows what they are doing.

Not insinuating that you're uneducated or careless. Just want you to be careful.

_________________________
.There's a fine line between BRAVE ... and STUPID.

Daddy K, be extremely careful my friend. Reduced loads can be extremely dangerous if loaded wrong and have destroyed numerous firearms. If you have any doubts about the load recipe, please check on here or with someone who knows what they are doing.

Not insinuating that you're uneducated or careless. Just want you to be careful.

From a squib? I've always heard about reduced loads being dangerous, but have never experienced it. I have loaded reduced ammo for just about every rifle I've ever had.

OP, I've found about 8-8.5 grains of titegroup works well in a 30-30, 308, and 30-06.

_________________________
The secret to a long life is to try not to shorten it

From a squib? I've always heard about reduced loads being dangerous, but have never experienced it. I have loaded reduced ammo for just about every rifle I've ever had.

Yes. From a load with the wrong powder that someone decided would work when they cut the charge in half. Not talking about what most would consider a "squib".

But if what you are doing works for you then by all means continue on. I'm just throwing out information. People can make their own decisions and also do their own research. But I'd be less than responsible if I just sat quietly and didn't offer the info during this discussion.

The danger is a pressure problem and is referred to as S.E.E. or Secondary Explosion Effect. It happens when a light charge of slow powder partially ignites, but because of a low pressure generated it pauses, drops pressure to nearly zero, and then ignites. Where the trouble begins is when the the powder first ignites, the bullet is started into the rifling as well as the unburned powder stacked up behind it causing a bore obstruction. SEE is difficult to produce at will even under lab conditions. I think slow ball powders in large cases were the worst, but even stick powders have caused this.

There are formulas for reduced loads that are published, and the powder companies make recommendations as to which powders lend themselves to be loaded that way. They also offer warnings about randomly reducing loads in rifle cartridges.

FWIW.

_________________________
.There's a fine line between BRAVE ... and STUPID.

Concur with kmon1. You may not be happy with loading it way down. I loaded my .270 down with 4895 for my grandson. My normal load with a 130 gr bullet and IMR4350 runs around 3050 fps. With a 60% 4895 load (27 gr) I got about 1900 fps. 70%...2100+ fps. 80%...2300+ fps. 90%...2550 fps.

If you go all the way down to 60% I think you will be slower than you want to be, but like Kmon said 60% is the minimum, you can work up from 60% all the way up to max listed full power and have a safe load.

I'm going from memory, but I believe the load for my 270 is 36 grains of H4895 and a 110 grain prohunter. It has proved to be a very effective hunting round with moderate distance and is very light recoil.